Fujifilm Fujinon XF 50mm F/2 R WR

Short telephoto prime lens • Digital era

XF The lens is designed for Fujifilm APS-C digital mirrorless cameras.
R The lens is equipped with aperture ring.
WR Dust-proof and Weather-Resistant lens.

Designed for

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Features highlight

APS-C
Fast
1 ASPH
1 ED
9 blades
IF
STM
Compact
Lightweight
DP/WR

Specification

Production details
Announced:January 2017
Production status:In production
Production type:Mass production
Original name:FUJINON ASPHERICAL LENS SUPER EBC XF 50mm 1:2 R WR
Optical design
Focal length:50mm
Speed:F/2
Maximum format:APS-C
Mount:Fujifilm X
Diagonal angle of view:31.8° (Fujifilm X APS-C)
Lens construction:9 elements - 7 groups
1 ASPH, 1 ED
Diaphragm mechanism
Number of blades:9
Focusing
Closest focusing distance:0.39m
Maximum magnification ratio:1:6.67 at the closest focusing distance
Focusing method:Internal focusing (IF)
Focusing modes:Autofocus, manual focus
Manual focus control:Focusing ring
Autofocus motor:Stepping motor
Focus mode selector:None; focusing mode is set from the camera
Manual focus override in autofocus mode:Determined by the camera
Optical Image Stabilizer (OIS)
Built-in OIS:-
Physical characteristics
Weight:200g
Maximum diameter x Length:⌀60×59.4mm
Weather sealing:Dust-proof and water-resistant barrel
Fluorine coating:-
Accessories
Filters:Screw-type 46mm
Lens hood:Bayonet-type (round)

*) Source of data: Manufacturer's technical data.

Manufacturer description #1

Valhalla, N.Y., January 19, 2017 – As the leader in innovation for photographers, FUJIFILM North America Corporation today announced the new FUJIFILM X-T20 interchangeable lens camera that joins the award-winning X Series digital camera lineup. The X-T20 is the successor to the FUJIFILM X-T10 and builds on its outstanding image quality, intuitive design, and versatility with a new APS-C sized 24.3MP X-Trans CMOS III sensor and X-Processor Pro image processing engine. The updated sensor and processor, along with an improved AF algorithm, boost the camera’s startup time and AF performance, dramatically improving its ability to track moving subjects for their best pictures to date. The X-T20 also has a large tilting touchscreen LCD monitor for multi-angle shooting and responds to quick gestures for a variety of efficient controls and picture review.

Also announced today is the new FUJINON XF50mmF2 R WR, a compact, mid-telephoto lens adding to the X Series lineup of interchangeable lenses known for their outstanding image quality. The lens features a focal length equivalent to 76mm (in the 35mm film format) and a maximum aperture of F2.0 for beautiful bokeh. The compact and stylish optic also offers high speed AF and weighs just 200g.

FUJINON XF50mmF2 R WR Lens

The new XF50mmF2 R WR is a mid-telephoto lens that is designed to deliver the very best results from Fujifilm’s unique X-Trans CMOS sensor. The XF50mmF2 R WR, perfect for any type of travel photography, is compact and lightweight, and features 9 elements in 7 groups, including one aspherical ED lens, and has an inner focusing system, driven by a stepping motor for fast and silent autofocusing. The premium XF50mF2 R WR is made of metal and glass for a stylish, robust design with a premium feel, while the aperture and focusing rings have been designed to be comfortable and easy to use. The lens is also weather and dust resistant, and operates in temperatures as low as 14°F10°C, making it ideal for shooting in a variety of weather conditions.

FUJINON XF50mmF2 R WR Lens Key Features:

  • FUJIFILM X-Mount is compatible with all FUJIFILM X Series interchangeable system cameras
  • Weather-sealed at ten points around the barrel for weather and dust resistance; operates as low as 14 degrees Fahrenheit -10 degrees Celsius
  • 9 lens elements in 7 groups including one aspherical ED lens
  • Compact, lightweight lens weighs just 200g
  • Aperture and focusing rings feature precise click stops and smooth damping for easy operation
  • Inner focusing AF system uses a stepping motor to drive lightweight focusing elements for a fast, silent autofocus performance
  • Super EBC (Super Electron Beam Coating) ensures high performance by reducing both flare and ghosting

Manufacturer description #2

The XF50mmF2 R WR is a mid-telephoto lens with a focal length equivalent to 76mm* that delivers the very best results from Fujifilm's unique X-Trans CMOS sensor. Its compact and lightweight design features 9 elements in 7 groups, including one aspherical ED lens, and has an inner focusing system**, driven by a stepping motor*** for fast and silent autofocusing. Metal parts are used extensively on the exterior for a stylish, robust design with a premium feel, while the aperture and focusing rings have been designed to be comfortable and easy to use. The lens is also weather and dust resistant, and operates in temperatures as low as -10°C, making it ideal for shooting in a variety of conditions.

The lens features 9 lens elements in 7 groups including one aspherical ED lens, which prevents spherical and chromatic aberrations. This ensures the lens delivers outstanding results and minimises variances in image quality at different shooting distances.

The lens weighs just 200g. The metal exterior uses the same design style as XF35mmF2 R WR and XF23mmF2 R WR for a robust, premium feel. The compact and stylish design almost completely eliminates mechanical vignetting* when using the optical viewfinder on the FUJIFILM X-Pro2 camera. The aperture and focusing rings feature precise click stops and smooth damping for easy operation.

The inner focusing AF system uses a stepping motor to drive lightweight focusing elements for a fast, silent autofocus performance.

The lens is weather-sealed at ten points around the barrel making it weather and dust resistant. It will also continue to operate in temperatures as low as -10°C. Used with the weather and dust-resistant FUJIFILM X-Pro2 or X-T2 bodies means users can shoot confidently in light rain or dusty environments.

Typical application

portraits, street, travel

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Fujifilm Fujinon XF 50mm F/2 R WR

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35mm full frame

43.27 24 36
  • Dimensions: 36 × 24mm
  • Aspect ratio: 3:2
  • Diagonal: 43.27mm

Travellers' choice

Note

Among autofocus lenses designed for 35mm full-frame mirrorless cameras only. Speed of standard and telephoto lenses is taken into account.

One of the best fast short telephoto primes

According to lens-db.com; among lenses designed for the same maximum format and mount.

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Image stabilizer

A technology used for reducing or even eliminating the effects of camera shake. Gyro sensors inside the lens detect camera shake and pass the data to a microcomputer. Then an image stabilization group of elements controlled by the microcomputer moves inside the lens and compensates camera shake in order to keep the image static on the imaging sensor or film.

The technology allows to increase the shutter speed by several stops and shoot handheld in such lighting conditions and at such focal lengths where without image stabilizer you have to use tripod, decrease the shutter speed and/or increase the ISO setting which can lead to blurry and noisy images.

Stepping motor

Aspherical elements

Aspherical elements (ASPH, XA, XGM) are used in wide-angle lenses for correction of distortion and in large-aperture lenses for correction of spherical aberration, astigmatism and coma, thus ensuring excellent sharpness and contrast even at fully open aperture. The effect of the aspherical element is determined by its position within the optical formula: the more the aspherical element moves away from the aperture stop, the more it influences distortion; close to the aperture stop it can be particularly used to correct spherical aberration. Aspherical element can substitute one or several regular spherical elements to achieve similar or better optical results, which allows to develop more compact and lightweight lenses.

Use of aspherical elements has its downsides: it leads to non-uniform rendering of out-of-focus highlights. This effect usually appears as "onion-like" texture of concentric rings or "wooly-like" texture and is caused by very slight defects in the surface of aspherical element. It is difficult to predict such effect, but usually it occurs when the highlights are small enough and far enough out of focus.

Low dispersion elements

Low dispersion elements (ED, LD, SD, UD etc) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. This type of glass exhibits low refractive index, low dispersion, and exceptional partial dispersion characteristics compared to standard optical glass. Two lenses made of low dispersion glass offer almost the same performance as one fluorite lens.

Low dispersion elements

Low dispersion elements (ED, LD, SD, UD etc) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. This type of glass exhibits low refractive index, low dispersion, and exceptional partial dispersion characteristics compared to standard optical glass. Two lenses made of low dispersion glass offer almost the same performance as one fluorite lens.

Canon's Super UD, Nikon's Super ED, Pentax' Super ED, Sigma's FLD ("F" Low Dispersion), Sony' Super ED and Tamron's XLD glasses are the highest level low dispersion glasses available with extremely high light transmission. These optical glasses have a performance equal to fluorite glass.

High-refraction low-dispersion elements

High-refraction low-dispersion elements (HLD) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture.

High Index, High Dispersion elements

High Index, High Dispersion elements (HID) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture.

Anomalous partial dispersion elements

Anomalous partial dispersion elements (AD) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture.

Fluorite elements

Synthetic fluorite elements (FL) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. Compared with optical glass, fluorite lenses have a considerably lower refraction index, low dispersion and extraordinary partial dispersion, and high transmission of infrared and ultraviolet light. They are also significantly lighter than optical glass.

According to Nikon, fluorite easily cracks and is sensitive to temperature changes that can adversely affect focusing by altering the lens' refractive index. To avoid this, Canon, as the manufacturer most widely using fluorite in its telephoto lenses, never uses fluorite in the front and rear lens elements, and the white coating is applied to the lens barrels to reflect light and prevent the lens from overheating.

Short-wavelength refractive elements

High and specialized-dispersion elements (SR) refract light with wavelengths shorter than that of blue to achieve highly precise chromatic aberration compensation. This technology also results in smaller and lighter lenses.

Blue Spectrum Refractive Optics

Organic Blue Spectrum Refractive Optics material (BR Optics) placed between convex and concave elements made from conventional optical glass provides more efficient correction of longitudinal chromatic aberrations in comparison with conventional technology.

Diffraction elements

Diffraction elements (DO, PF) cancel chromatic aberrations at various wavelengths. This technology results in smaller and lighter lenses in comparison with traditional designs with no compromise in image quality.

High refractive index elements

High refractive index elements (HR, HRI, XR etc) minimize field curvature and spherical aberration. High refractive index element can substitute one or several regular elements to achieve similar or better optical results, which allows to develop more compact and lightweight lenses.

Apodization element

Apodization element (APD) is in fact a radial gradient filter. It practically does not change the characteristics of light beam passing through its central part but absorbs the light at the periphery. It sort of softens the edges of the aperture making the transition from foreground to background zone very smooth and results in very attractive, natural looking and silky smooth bokeh.

Original name

Lens name as indicated on the lens barrel (usually on the front ring). With lenses from film era, may vary slightly from batch to batch.

Format

Format refers to the shape and size of film or image sensor.

35mm is the common name of the 36x24mm film format or image sensor format. It has an aspect ratio of 3:2, and a diagonal measurement of approximately 43mm. The name originates with the total width of the 135 film which was the primary medium of the format prior to the invention of the full frame digital SLR. Historically the 35mm format was sometimes called small format to distinguish it from the medium and large formats.

APS-C is an image sensor format approximately equivalent in size to the film negatives of 25.1x16.7mm with an aspect ratio of 3:2.

Medium format is a film format or image sensor format larger than 36x24mm (35mm) but smaller than 4x5in (large format).

Angle of view

Angle of view describes the angular extent of a given scene that is imaged by a camera. It is used interchangeably with the more general term field of view.

As the focal length changes, the angle of view also changes. The shorter the focal length (eg 18mm), the wider the angle of view. Conversely, the longer the focal length (eg 55mm), the smaller the angle of view.

A camera's angle of view depends not only on the lens, but also on the sensor. Imaging sensors are sometimes smaller than 35mm film frame, and this causes the lens to have a narrower angle of view than with 35mm film, by a certain factor for each sensor (called the crop factor).

This website does not use the angles of view provided by lens manufacturers, but calculates them automatically by the following formula: 114.6 * arctan (21.622 / CF * FL),

where:

CF – crop-factor of a sensor,
FL – focal length of a lens.

Mount

A lens mount is an interface — mechanical and often also electrical — between a camera body and a lens.

A lens mount may be a screw-threaded type, a bayonet-type, or a breech-lock type. Modern camera lens mounts are of the bayonet type, because the bayonet mechanism precisely aligns mechanical and electrical features between lens and body, unlike screw-threaded mounts.

Lens mounts of competing manufacturers (Canon, Nikon, Pentax, Sony etc.) are always incompatible. In addition to the mechanical and electrical interface variations, the flange focal distance from the lens mount to the film or sensor can also be different.

Lens construction

Lens construction – a specific arrangement of elements and groups that make up the optical design, including type and size of elements, type of used materials etc.

Element - an individual piece of glass which makes up one component of a photographic lens. Photographic lenses are nearly always built up of multiple such elements.

Group – a cemented together pieces of glass which form a single unit or an individual piece of glass. The advantage is that there is no glass-air surfaces between cemented together pieces of glass, which reduces reflections.

Flange focal distance

The flange focal distance (FFD), sometimes called the "flange back", is the distance from the mechanical rear end surface of the lens mount to the focal plane.

Focal length

The focal length is the factor that determines the size of the image reproduced on the focal plane, picture angle which covers the area of the subject to be photographed, depth of field, etc.

Speed

The largest opening or stop at which a lens can be used is referred to as the speed of the lens. The larger the maximum aperture is, the faster the lens is considered to be. Lenses that offer a large maximum aperture are commonly referred to as fast lenses, and lenses with smaller maximum aperture are regarded as slow.

In low-light situations, having a wider maximum aperture means that you can shoot at a faster shutter speed or work at a lower ISO, or both.

Closest focusing distance

The minimum distance from the focal plane (film or sensor) to the subject where the lens is still able to focus.

Closest working distance

The distance from the front edge of the lens to the subject at the maximum magnification.

Magnification ratio

Determines how large the subject will appear in the final image. For example, a magnification ratio of 1:1 means that the image of the subject formed on the film or sensor will be the same size as the subject in real life. For this reason, a 1:1 ratio is often called "life-size".

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Electronic manual focus override is performed in the following way: half-press the shutter button, wait until the camera has finished the autofocusing and then focus manually without releasing the shutter button using the focusing ring.

Electromagnetic diaphragm control system

Provides highly accurate diaphragm control and stable auto exposure performance during continuous shooting.

Convex protruding front element

The convex front element protrudes from the lens barrel, making it impossible to use filters.

Fixed focus

There is no helicoid in this lens and everything is in focus from the closest focusing distance to infinity.

Overall linear extension

The entire lens optical system moves straight backward and forward when focusing is carried out. This is the simplest type of focusing used mainly in wide-angle and standard prime lenses. It has the advantage of introducing relatively little change in aberrations with respect to change in focusing distance. With telephoto and super telephoto lenses this method becomes less beneficial in terms of operability because of the increased size and weight of the lens system.

Front group linear extension

The rear group remains fixed and only the front group moves straight backward and forward during focusing. This method is primarily used in zoom lenses and allows to design comparatively simple lens construction, but also places restrictions on zoom magnification and size reduction.

Front group rotational extension

The lens barrel section holding the front lens group rotates to move the front group backward and forward during focusing. This method of focusing is also used only in zoom lenses.

Internal focusing (IF)

Focusing is performed by moving one or more lens groups positioned between the front lens group and the diaphragm.

Methods of internal and rear focusing have the following advantages:

Rear focusing (RF)

Focusing is performed by moving one or more lens groups positioned behind the diaphragm.

Methods of internal and rear focusing have the following advantages:

Number of blades

As a general rule, the more blades that are used to create the aperture opening in the lens, the rounder the out-of-focus highlights will be.

Some lenses are designed with curved diaphragm blades, so the roundness of the aperture comes not from the number of blades, but from their shape. However, the fewer blades the diaphragm has, the more difficult it is to form a circle, regardless of rounded edges.

At maximum aperture, the opening will be circular regardless of the number of blades.

Weight

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

Maximum diameter x Length

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

For lenses with collapsible design, the length is indicated for the working (retracted) state.

Weather sealing

A rubber material which is inserted in between each externally exposed part (manual focus and zoom rings, buttons, switch panels etc.) to ensure it is properly sealed against dust and moisture.

Lenses that accept front mounted filters typically do not have gaskets behind the filter mount. It is recommended to use a filter for complete weather resistance when desired.

Fluorine coating

Helps keep lenses clean by reducing the possibility of dust and dirt adhering to the lens and by facilitating cleaning should the need arise. Applied to the outer surface of the front and/or rear lens elements over multi-coatings.

Filters

Lens filters are accessories that can protect lenses from dirt and damage, enhance colors, minimize glare and reflections, and add creative effects to images.

Lens hood

A lens hood or lens shade is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare. Flare occurs when stray light strikes the front element of a lens and then bounces around within the lens. This stray light often comes from very bright light sources, such as the sun, bright studio lights, or a bright white background.

The geometry of the lens hood can vary from a plain cylindrical or conical section to a more complex shape, sometimes called a petal, tulip, or flower hood. This allows the lens hood to block stray light with the higher portions of the lens hood, while allowing more light into the corners of the image through the lowered portions of the hood.

Lens hoods are more prominent in long focus lenses because they have a smaller viewing angle than that of wide-angle lenses. For wide angle lenses, the length of the hood cannot be as long as those for telephoto lenses, as a longer hood would enter the wider field of view of the lens.

Lens hoods are often designed to fit onto the matching lens facing either forward, for normal use, or backwards, so that the hood may be stored with the lens without occupying much additional space. In addition, lens hoods can offer some degree of physical protection for the lens due to the hood extending farther than the lens itself.